Chris - I suspect that's a question to ask of therapists.

Personally: I want to use my old, familiar, 'fits me' tools. Simple ones. I loathe clip-on tools and long handles. I don't mind double action tools such as secateurs and loppers which do what I can't on a no-power in the hands/arms day. Comfortable and warm handles.

And tools that keep me independent.

You didn't ask, but I'll tell you anyway ( :-D ) - a major hassle for me is moving the hose pipe and putting it away again. Fixed watering systems aren't an option for my style of gardening (nor my low pressure water.) I loved the flat hose I found - but the materials were flimsy and it gave up in disgust. The light and coiled pipe - I'd have more success in wrestling anacondas. Stiff plastic is exhausting. The pistol grip delivery heads - I haven't found one yet that doesn't create hand cramps very quickly. The adjustable nozzles? Sometimes I just can't move them.

So - adaptive or adaptable doesn't matter to me. I'd like my tools to look 'normal' and do the work I have in mind while offsetting my erratic muscles and tender parts.

Can you?

I've heard "ergonomic" and "adaptive".

Like vetivert, I haven't found many that were useful.